First Study of the Proactive Transmission of Replicated Frames Mechanism over TSN

TSN is a set of technical standards developed by IEEE to provide Ethernet with flexibility, real-time and reliability services. For these reasons, TSN represents an appealing technology for the networks of Cyberphysical Systems. Nevertheless, TSN does not cover some reliability aspects that are important to reach the reliability levels required by certain Cyberphysical Systems. Specifically, TSN does not devise any time redundancy mechanisms in the layer 2 to tolerate temporary faults in the channel. Thus, we proposed a time redundancy mechanism, called Proactive Transmission of Replicated Frames, to increase the reliability of TSN-based networks. In this work we describe two previous designs
of PTRF and we present a new design. We also describe the simulation model used to compare the designs. Specifically, we carried out exhaustive fault injection to validate the mechanism and a case study to compare the three designs.